LT1716
Production
The LT1716 comparator operates on any total power supply voltage between 2.7V and 44V drawing 35µA of quiescent current. The LT1716 has a unique input...
Datasheet
LT1716 on Analog.com
ADM7150
Recommended for New Designs
The ADM7150 is a low dropout linear regulator that operates from 4.5 V to 16 V and provides up to 800 mA of output current. Using an advanced proprietary...
Datasheet
ADM7150 on Analog.com
I like to use the LT1716 as a voltage detector that self monitor the 5V rail.
The 5V is coming from ADM7150 5V regulator. I like to generate logic 0 to turn off the FET if the rail goes below 4V5 so that the switch driver ( operates at 5V) is not turned on.
Is this the architecture that you had in mind? If I've mis-understood, can you sketch up and alternative? Will the power supply for the LT1716 also be coming from the ADM7150?
Hello
Very similar to your design. However, I am comparing Vref derived from P5V and comparing it against P5V. I don't this would work because threshold/reference is always changing with changing VOUT.
If P5V falls below a threshold it would turn off the N-CH FET and then the 28V P-channel FET which goes to a Tx and Rx Switch driver.
The application is power sequence of a switch driver to delay the 28V and apply P5V first.
